c# - 路由属性不起作用

Question

根据这篇文章，尝试在我的 MVC 应用程序中使用 [Route] 属性： https ://blogs.msdn.microsoft.com/webdev/2013/10/17/attribute-routing-in-asp-net-mvc-5 /

[Route("Error/{type?}")]
    public ActionResult Error(string type)
    {
        if (type == "Duplicate")
        {
            ViewBag.ErrorDetails = "There is already a redirect using that Vanity URL and Domain.";
        }

        if (type == "Unknown")
        {
            ViewBag.ErrorDetails = "An unknown error has occured. Probably your fault too.";
        }

        return View();
    }

我在 RouteConfig.cs 中有 MapMvcAttributeRoutes

public class RouteConfig
{
    public static void RegisterRoutes(RouteCollection routes)
    {
        routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

        routes.MapRoute(
            name: "Default",
            url: "{controller}/{action}/{id}",
            defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
        );

        routes.MapMvcAttributeRoutes();
    }
}

浏览到 /Admin/Error/Duplicate 但 /Admin/Error?type=Duplicate 工作正常时，我得到 404。

除了[Route("Error/{type}")]我尝试过[Route("Admin/Error/{type})]，[Route("{type})]但没有运气。我不知道我哪里错了。